float = 12345.6789, nearest int = 12346
float = 1_234_500_000_000_000_000_000_000.6789, nearest int = 1234500000000000000000001
float = 10.49, nearest int = 10
float = 11.5, nearest int = 12
float = 12.500000001, nearest int = 13
float = 1_234_500_000_000_000_000_000_042.499999, nearest int = 1234500000000000000000042
float = 13, nearest int = 13